On multivariate analysis, independent predictive factors for RP were smoking history (P?=?0.035), radiotherapy modality (P?&lt;?0.001), PTV (P?=?0.039), and lung V(P?&lt;?0.001), which were incorporated into the nomogram. The areas under the receiver operating characteristic curve of the nomogram in the primary and validation cohorts were 0.772 and 0.900, respectively, which were superior to each predictor alone.
Non-smoking status, 3DCRT, lung V(&gt;?27.5%), and PTV (??713.0cc) were significantly associated with a higher risk of RP. A nomogram was built with satisfactory prediction ability.
?27.5%), and PTV (??713.0 cc) were significantly associated with a higher risk of RP. A nomogram was built with satisfactory prediction ability.There is a need for better diagnostic tools that identify loose total hip and knee arthroplasties. Here, we present the accuracy of different Tc-dicarboxypropandiphosphate ([Tc]Tc-DPD) SPECT/CT quantification tools for the detection of loose prostheses in patients with painful hip and knee arthroplasties.
Quantitative reconstruction of mineral phase SPECT data was performed using Siemens xSPECT-Quant and xSPECT-Bone, with and without metal artefact reduction (iMAR) of CT-data. Quantitative data (SUVmax values) were compared to intraoperative diagnosis or clinical outcome after at least 1year as standard of comparison. Cut-off values and accuracies were calculated using receiver operator characteristics. Accuracy of uptake quantification was compared to the accuracy of visual SPECT/CT readings, blinded for the quantitative data and clinical outcome.
In this prospective study, 30 consecutive patients with 33 symptomatic hip and knee prostheses underwent [Tc]Tc-DPD SPECT/CT. Ten arthroplasties were dprostheses of all evaluated methods. The overall high accuracy of different quantitative measures underlines the potential of [99mTc]Tc-DPD-quantification as a biomarker and demands further prospective evaluation in a larger number of prosthesis.We present the use of intravascular lithotripsy as a treatment for highly calcified superior mesenteric artery stenosis.
A 67-year-old diabetic man had chronic postprandial abdominal pain and weight loss. Computed tomography angiography revealed highly calcified stenosis of the superior mesenteric artery. Selective angiography confirmed severe stenosis. A Shockwave lithotripsy balloon catheter was successfully used via brachial access to modify calcified plaque and increase vascular lumen. After 12 months of follow-up the patient had gained weight and had no abdominal postprandial pain.
Intravascular lithotripsy could be considered a new treatment modality to modify calcified lesions in the visceral arteries. More controlled studies are needed to demonstrate the efficacy, safety and feasibility of this new technology.
4, Case Report.
4, Case Report.Thin elastic sheets supported on compliant media form wrinkles under lateral compression. Since the lateral pressure is coupled to the sheet's deformation, varying it periodically in time creates a parametric excitation. We study the resulting parametric resonance of wrinkling modes in sheets supported on semi-infinite elastic or viscoelastic media, at pressures smaller than the critical pressure of static wrinkling. We find distinctive behaviors as a function of excitation amplitude and frequency, including (a) a different dependence of the dynamic wrinkle wavelength on sheet thickness compared to the static wavelength; and (b) a discontinuous decrease in the dominant wrinkle wavelength upon increasing excitation frequency at sufficiently large pressures. In the case of a viscoelastic substrate, resonant wrinkling requires crossing a threshold of excitation amplitude. The frequencies for observing these phenomena in relevant experimental systems are of the order of a kilohertz and above. We discuss experimental implications of the results.To develop prediction models for the chance of successful external cephalic version (ECV) and delivery outcome.
This is a single-center retrospective study including 350 pregnant women with a singleton non-cephalic pregnancy at or after 36weeks of gestational age. We selected 22 factors for ECV prediction and 21 for delivery outcome after successful ECV prediction as candidate predictors. https://www.selleckchem.com/ALK.html Multivariable logistic regression with a stepwise backward selection procedure was used to construct a prediction model for the chance of successful ECV and the other for the delivery outcome. The discrimination and calibration of the models were assessed and internal validation was done with bootstrapping.
ECV was successfully performed in 232 cases (66.3%) among 343 women. Eight predictive factors were identified to be associated with a successful ECV Gestational week at ECV?&lt;?39weeks, multiparous, BMI before pregnancy?&lt;?22kg/m, palpable fetal head, breech engagement, larger AFI, larger BPD and posterior placenta. This model showed good calibration and good discrimination (c-statistic?=?0.82, 95% CI 0.76-0.88). Six predictive factors were identified to be associated with vaginal delivery after successful ECV age?&lt;?35, multiparous, BMI before pregnancy?&lt;?22kg/m, anterior placenta, lateral placenta and none-front fetal spine position. This model showed fair discrimination (c-statistic?=?0.79, 95% CI 0.72-0.85). However, its calibration was not so satisfactory especially when the predicted probability was low.
We validated a prediction model for ECV and delivery outcome, showing that the model's overall performance is good. This can be used in clinical practice after external validation.
We validated a prediction model for ECV and delivery outcome, showing that the model's overall performance is good. This can be used in clinical practice after external validation.Pharmaceutical tablets can be susceptible to damage such as edge chipping or erosion of the core during the tablet coating process. The intersection of certain process parameters, equipment design, and tablet properties may induce more significant tablet damage such as complete tablet fracture. In this work, a hybrid predictive approach was developed using discrete element method (DEM) modeling and lab-based tablet impact experiments to identify conditions that may lead to tablet breakage events. The approach was extended to examine potential modifications to the coating equipment and process conditions in silico to mitigate the likelihood of tablet breakage during future batches. The approach is shown to enhance process understanding, identify optimal process conditions within development constraints, and de-risk the manufacture of future tablet coating batches.